The best Firewall alternative to NextDNS is Portmaster, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to NextDNS and 13 are Firewalls so hopefully you can find a suitable replacement. Other interesting Firewall alternatives to NextDNS are AdGuard, RethinkDNS, InviZible Pro and Zen Ad-Blocker.
Free, open-source privacy suite monitoring all network activity, blocking unwanted connections, using trusted filter lists for ads and malware, enforcing DNS-over-TLS, providing custom app and global rules, and supporting advanced privacy management.
Ad-blocking solution eliminating intrusive ads and preventing tracking, with malware protection. Filters pop-ups, banners, and more for clean browsing. Works in the background for ad-free surfing, protects data privacy with Spyware filter, and controls ad display in apps.
Most users think AdGuard is a great NextDNS alternative.
An OpenSnitch-inspired firewall and network monitor + a pi-hole-inspired DNS over HTTPS client with blocklists.
Like NextDNS, RethinkDNS is a DNS resolver that aim to provide a safer and more private browsing experience by offering ad-blocking and tracking protection. On the plus side it is open source and the free tier with unlimited queries. The free tier of NextDNS is limited to (I think) 300,000 queries. If you want a free and open source alternative this is it. At the time of writing, their website does state that paid plans are on their way.
RethinkDNS allows you to check if a domain is blocked or not in the lists you choose, but it doesn't allow for personalized allowlists or blocklists, nor does it have a comprehensive log (besides using the app).
Almost everyone thinks RethinkDNS is a great NextDNS alternative.
InviZible Pro uses DNSCrypt Protocol, Tor and i2pd (I2P Daemon) (PurpleI2P) to achieve maximum security, privacy and comfortable use of the Internet.
Zen is an open-source system-wide ad-blocker and privacy guard for Windows, MacOS, and Linux. It works by setting up a proxy that intercepts HTTP requests from all applications, and blocks those serving ads, tracking scripts that monitor your behavior, malware, and other...
DNS66 blocks advertisements on Android by intercepting DNS requests using Android's VPN layer and blocking requests for blacklisted hosts.
A fundamental re-design of user Data Privacy. Your multi-tool for online protection. So easy your grandma could use it. Costs less than a cup of coffee per year.
CacheGuard Gateway is a free and open-source Unified Threat Management (UTM) solution, a Web Application Firewall (WAF), and a Quality of Service (QoS) platform designed to optimize WAN traffic. To obtain a CacheGuard Gateway appliance, download CacheGuard-OS and install it on...
Firewalla is a vital security addition to every home and small business with network and IoT devices.
ZenMate Web Firewall is a security solution that blocks malware, trackers and security threats, plus free Ad Blocker against Malvertising!.
Free adblocker, anonymity, traffic and battery saver, firewall, and Internet speed increase.
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AdGuard is an Adblock browser extension not a DNS service.